PORT TOWNSEND, WASHINGTON

Monthly Total Heating Degree Days

(456678)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201001
a = 1 day missing, b = 2 days missing, c = 3 days, ..etc..,
z = 26 or more days missing, A = Accumulations present
Long-term means based on columns; thus, the monthly row may not
sum (or average) to the long-term annual value.
Months with 5 missing days or less use mean for missing day(s)
Individual Months not used for annual or monthly statistics if more than 5 days are missing.
Individual Years not used for annual statistics if any month in that year has more than 5 days missing.
YEAR(S JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN
1891 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 426.00 588.00 822.00 1836.00
1892 820.47 a 0.00 z 604.50 577.50 391.00 241.50 205.00 140.50 238.00 464.50 0.00 z 0.00 z 3682.97
1893 0.00 z 0.00 z 700.50 613.50 420.50 312.50 158.00 133.00 229.00 502.50 720.00 694.00 4483.50
1894 846.00 797.50 730.00 560.00 435.00 282.50 126.50 88.50 275.50 503.00 598.00 916.00 6158.50
1895 0.00 z 618.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 618.00
1896 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1897 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 82.00 p 193.50 72.00 247.50 420.50 630.00 699.50 2263.00
1898 758.00 561.00 663.40 a 502.50 329.50 214.50 159.00 112.00 196.50 386.00 570.00 748.00 5200.40
1899 772.00 735.00 694.50 524.50 465.00 330.00 149.00 214.50 193.00 444.50 396.50 640.50 5559.00
1900 658.50 637.00 524.50 428.50 363.50 199.00 135.00 176.00 251.50 454.00 651.00 618.50 5097.00
1901 789.50 646.07 a 619.50 542.00 397.00 323.79 a 228.50 111.37 d 253.50 313.00 473.50 688.00 5385.74
1902 792.00 554.50 656.00 477.50 340.00 223.00 151.50 142.60 a 251.50 380.50 610.00 713.50 5292.60
1903 708.00 710.00 730.00 536.90 a 404.50 198.50 192.50 154.00 275.50 418.50 599.00 688.50 5615.90
1904 732.00 736.00 731.50 419.50 382.50 255.52 a 139.50 179.50 194.00 371.00 480.00 660.50 5281.52
1905 744.50 656.00 508.92 a 441.50 392.00 238.00 141.50 163.00 225.00 508.50 595.34 a 714.50 5328.76
1906 704.00 585.00 615.50 419.00 357.00 250.50 74.00 112.50 256.00 384.00 613.50 699.50 5070.50
1907 967.50 617.04 a 640.00 510.00 294.00 234.00 130.00 176.50 220.50 408.00 535.00 693.50 5426.04
1908 726.00 653.50 639.00 500.50 409.50 250.50 103.50 201.00 305.00 471.00 511.50 780.50 5551.50
1909 969.50 630.50 639.50 522.50 432.93 b 223.50 176.50 f 184.00 241.50 447.50 611.50 855.00 5757.93
1910 809.50 734.00 574.00 512.50 325.50 a 274.00 153.00 227.85 a 252.50 425.73 a 608.50 676.46 c 5573.55
1911 870.00 710.50 639.50 568.85 d 429.35 a 292.24 a 148.80 a 157.50 266.50 433.47 b 635.36 b 718.34 b 5870.41
1912 704.70 c 629.41 b 678.50 480.50 311.00 215.77 d 119.50 g 155.50 232.00 329.00 k 587.50 708.00 4702.87
1913 879.00 723.50 715.50 488.00 366.00 242.00 192.50 116.77 a 210.50 504.00 593.50 710.00 5741.27
1914 720.00 640.50 538.00 442.50 266.50 239.50 150.00 138.50 272.22 c 369.00 578.28 a 820.50 5175.50
1915 754.50 568.50 476.50 387.50 317.50 212.00 213.50 7.50 z 208.50 407.00 656.00 725.00 4926.50
1916 1094.62 b 684.00 636.50 453.50 422.00 232.24 a 198.50 138.00 213.00 463.50 683.00 840.44 d 6059.31
1917 856.63 a 727.50 735.00 515.50 426.50 294.44 c 176.50 102.00 212.78 c 429.00 508.50 682.00 5666.36
1918 680.50 705.50 629.82 a 499.00 429.50 208.00 190.00 160.68 a 170.50 364.25 a 586.15 d 735.00 5358.90
1919 728.50 d 663.00 621.55 a 479.48 a 397.66 b 281.00 172.16 c 87.50 o 221.79 b 509.36 b 655.56 c 786.37 a 5516.42
1920 779.28 b 683.50 721.78 a 653.50 345.00 f 218.40 e 132.50 127.00 266.50 471.50 544.50 698.50 5296.96
1921 765.50 618.50 630.50 547.24 a 388.00 231.50 77.50 m 175.31 b 281.00 406.00 628.00 799.00 5470.55
1922 889.00 750.62 b 731.60 a 560.50 371.00 177.00 166.50 150.00 201.50 374.50 641.79 b 846.00 5860.00
1923 766.50 755.00 674.00 456.50 357.50 222.00 133.50 103.69 b 199.50 391.00 549.00 713.50 5321.69
1924 747.62 a 557.50 620.00 502.50 297.00 196.50 158.88 c 148.59 b 233.00 408.00 639.50 843.50 5352.58
1925 746.00 580.50 632.50 457.00 268.48 c 218.00 103.50 111.94 d 222.50 460.50 575.50 628.27 a 5004.69
1926 712.00 539.54 b 501.68 a 344.00 298.00 131.00 84.50 126.00 261.00 348.50 489.83 a 723.50 4559.55
1927 763.50 617.50 636.00 529.00 378.50 159.50 99.50 132.00 223.50 401.00 617.00 875.00 5432.00
1928 699.50 647.50 557.00 486.00 261.50 186.00 91.50 141.00 243.00 423.00 552.50 752.50 5041.00
1929 929.50 784.00 630.50 418.50 g 370.50 184.50 f 101.50 111.00 220.00 375.88 c 628.00 697.50 4848.38
1930 1041.60 a 636.70 e 664.00 508.20 e 492.50 246.00 131.50 87.00 188.00 485.00 623.50 696.00 5800.00
1931 634.50 618.00 583.00 410.00 282.00 206.50 110.00 86.50 h 206.90 a 433.00 680.00 740.50 4904.40
1932 834.00 710.50 601.50 452.22 c 354.50 195.50 148.50 85.50 212.50 348.48 b 352.00 i 821.50 4764.71
1933 811.00 764.00 646.00 480.50 433.50 279.00 157.50 111.00 279.50 406.50 590.50 696.50 5655.50
1934 644.91 c 540.00 471.00 342.00 164.00 h 0.00 z 140.00 108.50 232.50 d 365.50 489.00 707.00 4040.41
1935 767.00 219.00 q 702.50 496.50 360.00 174.50 137.00 125.00 167.50 456.50 660.00 660.50 4707.00
1936 721.50 900.50 680.50 426.00 284.50 149.50 109.00 72.50 245.00 336.50 550.00 635.50 c 5111.00
1937 1078.59 b 717.50 534.50 543.50 355.50 179.50 113.50 143.50 212.00 359.50 544.50 682.00 5464.09
1938 759.50 651.50 632.00 451.00 362.38 b 195.00 135.50 178.00 215.00 428.50 661.50 725.00 5394.88
1939 688.00 737.50 659.00 446.50 352.50 299.50 143.50 106.00 209.00 450.00 490.50 602.00 5184.00
1940 712.50 607.00 536.00 403.00 276.00 164.00 228.22 b 67.50 g 157.24 a 371.00 685.50 678.50 4818.97
1941 700.00 540.50 485.50 395.50 303.00 175.00 69.00 145.50 278.50 437.50 566.00 749.00 4845.00
1942 776.00 643.50 640.15 a 451.00 342.00 215.00 c 83.04 c 71.30 a 198.50 384.92 a 627.00 701.50 5133.90
1943 934.59 d 622.00 686.28 b 393.00 380.00 218.28 a 132.00 133.00 170.89 b 384.00 558.00 720.00 5332.04
1944 0.00 z 647.00 652.00 461.00 306.00 219.00 79.16 c 151.00 0.00 z 328.00 546.50 743.50 4133.16
1945 689.00 610.00 650.00 526.00 289.50 203.00 113.50 135.00 276.50 396.00 634.50 734.50 5257.50
1946 715.50 624.00 620.50 483.00 273.50 203.50 127.50 113.00 0.00 z 0.00 z 0.00 z 0.00 z 3160.50
1947 863.72 b 597.00 582.50 429.50 177.50 i 202.50 123.00 128.50 206.00 396.00 647.00 674.50 4850.22
1948 803.50 763.50 662.50 535.50 369.50 156.50 152.50 163.00 248.00 425.50 536.00 0.00 z 4816.00
1949 981.50 767.00 634.50 503.50 282.00 232.50 171.50 177.50 226.50 543.00 511.50 801.50 5832.50
1950 1203.50 693.00 704.50 566.00 440.50 204.83 a 166.50 131.50 247.50 480.50 648.00 613.00 6099.33
1951 841.00 682.00 774.50 482.00 365.50 192.00 127.50 149.00 228.50 0.00 z 624.00 856.00 5322.00
1952 839.00 684.50 684.00 525.50 381.50 308.50 169.00 148.50 194.50 370.00 656.50 697.00 5658.50
1953 655.50 649.50 655.50 524.50 363.50 291.21 a 139.50 111.50 213.00 401.50 527.50 688.50 5221.21
1954 869.50 627.50 729.50 576.00 377.00 302.50 193.50 179.00 213.50 456.50 486.00 706.00 5716.50
1955 734.50 684.96 a 565.00 f 594.50 442.00 278.00 207.00 150.87 a 242.00 447.50 747.00 816.50 5344.83
1956 789.50 806.50 714.00 429.50 255.00 264.50 95.50 102.50 216.00 458.50 620.50 730.00 5482.00
1957 930.50 698.00 640.00 440.50 224.75 e 171.00 128.50 75.36 b 77.50 152.00 r 581.00 314.00 o 3967.11
1958 644.50 487.00 454.50 f 423.50 270.73 a 93.50 28.00 38.50 176.00 382.50 628.00 599.00 3771.23
1959 729.02 a 650.50 600.50 443.57 b 341.00 169.00 83.50 123.00 240.00 412.30 a 625.00 707.50 5124.89
1960 761.05 a 648.50 645.50 442.50 357.50 212.00 85.50 152.93 a 234.00 388.50 599.00 701.00 5227.98
1961 634.50 552.50 570.50 475.50 324.00 134.50 67.00 47.50 224.50 455.00 665.00 744.00 4894.50
1962 746.00 601.00 667.50 455.50 406.50 224.00 154.00 131.50 198.50 391.00 540.50 654.50 5170.50
1963 869.50 496.00 606.05 a 467.00 302.00 212.50 144.00 80.00 133.00 342.50 574.00 620.00 4846.55
1964 615.00 621.50 630.00 518.00 408.00 237.50 141.00 131.50 238.00 408.50 662.50 844.50 5456.00
1965 764.50 628.00 601.50 458.50 400.50 207.50 121.50 114.50 254.50 340.50 498.50 731.00 5121.00
1966 730.50 582.50 609.50 461.50 355.00 233.00 185.50 136.00 186.50 475.00 588.50 650.00 5193.50
1967 728.50 584.00 667.00 540.00 367.50 146.00 125.50 56.00 115.00 401.50 571.50 743.00 5045.50
1968 759.50 567.00 555.50 510.00 318.00 224.00 76.00 130.50 218.00 434.52 a 570.50 755.92 e 5119.44
1969 612.00 n 696.50 617.33 b 503.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1816.83
1970 0.00 z 555.00 785.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1340.50
1971 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 33.50 l 56.50 256.00 472.50 584.00 827.50 2196.50
1972 884.50 666.50 599.50 580.50 279.52 a 235.00 117.00 100.50 292.50 459.50 580.00 842.00 5637.02
1973 807.50 601.50 602.50 473.00 344.62 a 248.50 129.00 160.68 a 174.50 433.50 663.00 658.00 5296.30
1974 788.50 624.30 a 641.18 a 490.00 400.50 212.00 163.00 106.00 114.50 385.50 559.50 659.50 5144.48
1975 769.32 a 677.00 665.50 558.10 a 350.30 a 257.00 119.00 179.80 a 184.00 442.78 a 575.40 e 700.50 5478.70
1976 702.50 660.50 712.47 b 478.93 b 360.12 a 276.43 b 130.20 a 180.50 188.57 b 405.00 546.00 631.50 5272.71
1977 777.50 527.00 629.50 432.50 392.48 c 189.50 153.50 88.00 227.00 422.00 0.00 z 722.50 4561.48
1978 695.00 576.00 543.50 455.00 349.27 a 100.00 99.50 107.95 c 228.50 380.00 688.00 822.00 5044.71
1979 891.50 673.50 533.50 474.50 281.00 195.00 95.50 83.50 119.00 337.00 602.00 621.03 a 4907.03
1980 865.00 603.00 622.50 424.00 325.50 234.00 121.50 134.00 196.00 85.00 t 0.00 z 364.50 i 3525.50
1981 604.50 584.00 495.50 439.00 322.50 253.50 97.00 55.00 172.50 427.50 523.00 705.50 4679.50
1982 772.00 621.50 615.50 512.50 319.50 134.50 134.00 93.00 153.50 385.50 637.50 705.00 5084.00
1983 616.00 523.00 480.50 410.00 242.00 181.00 95.50 40.50 219.00 419.00 523.50 884.50 4634.50
1984 675.28 a 561.00 511.50 466.50 369.00 214.00 97.50 60.00 212.50 459.50 595.00 849.00 5070.78
1985 782.00 665.00 628.50 459.50 302.00 179.50 14.00 86.00 221.00 423.00 863.00 798.50 5422.00
1986 617.00 631.50 498.50 488.50 307.50 142.00 125.00 24.50 201.00 377.50 596.00 681.50 4690.50
1987 719.00 526.00 505.50 395.50 276.00 162.00 83.00 71.50 141.00 334.00 0.00 z 0.00 z 3213.50
1988 244.50 t 583.00 595.00 436.00 323.50 221.50 130.50 93.00 214.50 353.00 557.00 685.00 4192.00
1989 726.00 806.50 658.00 381.00 323.50 169.50 124.00 115.50 116.50 404.50 547.00 652.00 5024.00
1990 688.50 701.50 570.00 410.00 322.00 197.00 52.50 0.00 z 0.00 z 0.00 z 0.00 z 921.50 3863.00
1991 770.00 505.00 649.50 474.00 341.00 242.00 94.00 86.50 138.00 417.50 539.00 634.50 4891.00
1992 619.50 531.50 481.00 399.00 231.00 103.00 85.00 76.00 228.00 352.00 568.50 776.00 4450.50
1993 853.00 670.00 529.00 430.50 209.50 193.00 144.50 95.50 192.00 353.50 663.50 699.50 5033.50
1994 606.50 662.50 536.00 410.00 271.00 204.00 83.50 35.50 123.50 412.50 659.00 707.50 4711.50
1995 654.00 569.50 579.50 449.50 250.00 172.00 63.50 154.00 101.50 415.00 492.50 696.00 4597.00
1996 757.50 646.00 564.50 423.50 406.00 218.00 91.00 67.50 242.00 432.00 627.50 799.50 5275.00
1997 722.50 600.00 615.00 446.50 248.50 183.50 86.50 42.50 130.50 388.50 512.00 662.00 4638.00
1998 704.50 530.50 538.50 442.00 304.00 175.00 88.00 64.00 135.00 390.50 518.00 750.50 4640.50
1999 689.50 608.00 626.50 484.00 407.50 260.00 148.50 95.00 190.00 429.00 517.00 686.50 5141.50
2000 756.50 611.50 597.50 438.50 365.00 188.50 108.50 126.50 197.50 382.00 634.50 723.00 5129.50
2001 662.50 644.00 0.00 z 489.50 334.00 255.00 142.50 111.50 182.00 429.50 553.00 723.00 4526.50
2002 695.00 604.00 702.00 472.50 373.00 147.50 93.50 94.15 d 178.00 423.50 513.00 664.00 4960.15
2003 601.00 585.00 550.50 468.50 345.50 131.50 50.00 48.00 122.00 344.00 661.50 709.50 4617.00
2004 716.00 566.50 525.50 354.00 272.00 127.50 47.50 49.00 212.00 365.00 575.50 679.00 4489.50
2005 694.00 620.00 506.50 356.50 245.00 153.00 48.00 46.50 212.50 378.20 a 636.00 703.00 4599.20
2006 639.00 672.50 605.00 0.00 z 319.00 90.50 i 81.00 135.00 171.00 438.50 0.00 z 681.47 b 3742.47
2007 735.39 d 563.50 530.58 e 465.00 336.50 237.00 42.50 0.00 z 0.00 z 372.00 b 577.00 0.00 z 3859.47
2008 0.00 z 595.00 644.00 0.00 z 0.00 z 205.50 42.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1486.50
2009 775.00 0.00 z 742.45 a 514.80 e 275.00 g 124.00 29.50 0.00 z 131.50 417.50 567.50 548.00 i 3302.25
2010 600.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 600.50
Period of Record Statistics
MEAN 766.24 639.18 618.85 474.52 343.41 212.39 124.08 117.67 208.85 412.15 590.67 725.47 5224.15
S.D. 108.92 74.99 71.54 57.95 58.11 49.62 44.52 42.69 45.50 45.55 66.07 71.19 386.23
SKEW 1.24 0.55 -0.13 0.26 -0.02 0.01 -0.03 -0.02 -0.57 0.29 0.44 0.72 0.14
MAX 1203.50 900.50 785.50 653.50 492.50 330.00 228.50 227.85 305.00 543.00 863.00 921.50 6158.50
MIN 600.50 487.00 471.00 342.00 209.50 93.50 14.00 24.50 77.50 313.00 396.50 599.00 4450.50
NO YRS 109 111 111 110 107 109 110 106 109 108 106 106 80